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प्रश्न
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
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उत्तर
When a coil has a large number of turns, then magnitude of induced e.m.f. in the coil become more and then by Lenz's law it will oppose more.
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संबंधित प्रश्न
State Faraday's laws of electromagnetic induction.
State Lenz’s Law.
In the following diagram an arrow shows the motion of the coil towards the bar magnet.
(1) State in which direction the current flows, A to B or B to A?
(2) Name the law used to come to the conclusion.
What is Lenz’s law?
The direction of induced current is obtained by ______.
The diagram in shows a coil of several turns of copper wire near a magnet NS. The coil is moved in the direction of arrow shown in the diagram.
- In what direction does the induced current flow in the coil?
- Name the law used to arrive at the conclusion in part (i).
- How would the current in coil be altered if
- the coil has twice the number of turns,
- the coil was made to move three times fast?
The direction of the magnetic field around a straight conductor carrying current can be determined by ______.
Define the right-hand thumb rule.
For which angle between two equal vectors `vec"A"` and `vec"B"` will the magnitude of the sum of two vectors be equal to the magnitude of each vector?
State two factors on which the magnitude of induced e.m.f. in a coil depend.
